According to police, the man who fatally shot eight people at a Dallas-area house party was identified on Tuesday. Spencer James Hight was the estranged husband of one of the victims. He opened fire at the house in Plano on Sunday. two months prior, his wife, Meredith Emily Hight, filed for divorce. The shooting took place during a cookout. Officials in Plano have said it was the deadliest mass killing they have ever dealt with in the city. A police officer arrived at the home less than three minutes after an emergency call was made and shot the gunman.